Bicycle-lock



(No Medel.)

E.,E. TRYON.

BICYCLE LOCK.

` Ne. 601,290. l Patented Mer. 29,1998.

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UNTTED STATES PATENT muon'.

'EDWARD E. TRYON, OF EAST HARTFORD, CONNECTICUT.

BICYCLE-LOCK.

SPECIFICATION forming part of Letters Patent No. 601,290, dated March29, 1898.

Application filed October 11, 1897. Serial No. 654,815. (No model.) I

T0 all whom t may concern:

Be it known that I, EDWARD E. TRYON, a citizen of the United States,residing in East Hartford, in the .county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inBicycle-Locks, of which the following is a specification.

This invention relates to improvements in bicycle-locks; and it has forits object the provision of a simple device of this character soconstructed as to lock the steering-head of a bicycle securely to thesteering-tube, said lock consisting of a minimum number of parts which'can be quickly assembled in working position on the steering-head tube.

The main feature of my invention resides, in connection with asteering-head and a tube, in a locking-bolt carrier havingscrew-receiving openings, la series of screws passing through saidopenings and in threaded engagement with the'steering-head tube, acasing tting around said carrier, and a bolt passing through a bore in acarrier and adapted to be shot into the recess in thesteeringhead, saidbolt having a cap or guard lat its outer end of vsuch size as to preventaccess to the heads of the carrier-holding screws, thereby thwarting thelremoval of the lock from thev steering-'head tube of the bicycle byunauthorized persons. n

In the drawings accompanying and forming part of this specification,Figure 1 is a side elevation of the front part of a bicycle,

showing my improved lock on the steeringhead. Fig. 2` is a sectionalside elevation of the steering-head, its tube, and the lock, on anenlarged scale, the bolt being illustrated in its protracted or workingposition to lock the steeringhead against turning. Fig. 3 isasubstantially similar view, the bolt being represented in its retractedposition. Fig. 4L is a sectional plan view, the, section being takenthrough the steering-head and steeringhead tube in a line slightly abovethe lock in Fig. 2. Fig. 5 is a horizontal central section ofthe lock.Fig. 6 is a transverse section taken in'` a line passing through thecenter of the lock-cylinder, and Fig. 7 is an elevation of a simple formof key for actuating the lock.'

Similar characters designate like parts in all the figures of thedrawings.

`.with said head.

ving position on the machine.

l3, into either one of which the inner end of the lock-bolt may beinserted to secure the head to the steering-head tube, so as to preventthe head from turning. l

My improved lock embodies as a part thereof a bolt-carrier, which :maybe secured to the steering-head in any suitable manner, but which ispreferably fixed thereto by holdingscrews, as 4 and 5, respectively, inthreaded engagementwith the steering-head tube T and passing throughopenings near the inner end -of the carrier,(designated by H,) thatportion of the latter which lits against the steering-head being of ashape to correspond The'lock-bolt carrier H has in diametricallyopposite sides thereof the grooves or channels 6 and 7, respectively, toadmit a suitable instrument for driving the two screws 4 and 5,respectively, into their seats in the tube T when the lock is placed ona machine.

The bolt-lock is designated by B, and it is longitudinallyrecip'rocative in the bore 8, extending entirely through the carrier,the inner end of said bolt being adapted to be projected into one ortheother of the recesses 2 and 3 in the steering-head S, and also passingthrough an opening or slot 9 in the tube T.

The bolt-carrier` H is surrounded by the casing or collar l0, which,when the parts are assembled, is adapted to lit against the abutment orshoulder 12 near the inner end of said bolt-carrier.

The outer end of the bolt B is provided with a cap or guard which servesto prevent access to the heads of the carrier-holding screws 4 and 5when the parts are assembled in workguard is designated by 13, and itconsists in the present case of a disk which may be formed integral withthe bolt B, and its diameter is approximately equal to that of thecasing or sleeve'lO, and it will be apparent on an in- This cap or IOOspcction of the drawings that when the lock parts are assembled it isimpossible to introduce a screw-driver or other tool in the grooves Gand 7 for the pu rpose of removing the screws.

The bolt-lock l) is preferably thrown into or out of the steering-headrecesses 2 and 3 by a key-operated cylinder, as C, situated for rotationin a transverse opening 11 in the bolt-carrier ll, and said cylinder isconnected with the bolt by a joint eccentric to the axis of rotation ofthe cylinder, so that when the cylinder is manipulated by a key the boltmay be shot into or out of the keeper-recesses in the steering-head inaccordance with the direction in which said cylinder may be turned.

The lock-operating cylinder C consists in the present case of twosuperposed parts 15 and 1G, respectively, independently rotative andsecured to each other by the pivot 17, consisting of a rivet whose lowerend may be headed to prevent the separation of the two cylinder parts.The cylinder passes through the recess 1S in the casing 10, and it isconstructed, preferably, of different sizes, the under section 15 beingof greater diameter than the upper, by reason of which a stop orshoulder 1f) is produced near the middle of the cylinder and bearsagainst the sleeve 10 to prevent the removal of the said cylinder.

rlhe two parts of the cylinder C are longitudinally groovcd or notchedin their opposite sides, as at 2O and 21, respectively, and when thenotches of the upper section are in alinement or registration with thecorresponding notches on the under cylinder-section it will be evidentthat the cylinder may be turned by a key, such as K, adapted to straddlethe cylinder, the bits or branches 22 and 23 of which are adapted toenter the alined notches or grooves in the opposite sides of thecylinders.

The under cylinder-section 15 is equipped with a depending stud or pineccentric to the axis of rotation 0i' the cylinder, which is adapted toenter the peripheral socket 2G in the lock-bolt B, and by virtue of theconnection just described it will be apparent that when the cylinder isturned in the manner previously indicated the lock-bolt will be throwninto or out of one of the recesses in the steering-head to lock orunlock the latter.

The tumbler for locking the bolt in its respective positions may be ofany suitable construction. The tumbler in the present case consists of alongitudinal curved spring 25, seated in the channel 26 of thebolt-carrier II, the groove being deepest at a point adjacent thecylinder, thereby to permit the working or free end of the spring to besunk into said recess to release the cylinder. lThe opposite end of saidspring is secured to the carrier in some convenientmanner. Thespringtumbler 25 is held in a notch of the casing 10.

The free or working end of the spring is adapted to enter either one ofthe notches 2O and 21 in the lower cylinder-section 15, thereby to lockthe bolt in either one of its two positions, and these parts aremaintained in effective engagement by the collar 10, which holds thespring in a notch. The free end of the spring is disposed in the path ofone of the bits 22 and 23 of the key K, and when the bit strikes thespring the latter is thrust out of the notch in which it had beenseated, so that the cylinder is released and can be turned by the key,and when the bolt reaches its other extreme position the free end of thespring will enter the opposite notch on the cylinder when the key iswithdrawn to hold the lockbolt.

To attach the lock to a cycle, the carrier Il is iirst placed againstthe tube T with its boltrecciving bore S in alinement with the opening 9in the tube, after which the holdingscrews 2 and 5 are inserted intotheir openings in the carrier and turned into the tube T by ascrew-driver or other tool. The casing or ring 10 is then placed overthe bolt until the inner end of the ring abuts against the inside faceof the disk or guard 13. Then the ring is placed over the carrier untilthe socket 2G in the bolt B is Visible through the aperture 14, at whichtime the cylinder is inserted into the said aperture and the eccentricpin thereon will drop into the pocket. rlhe spring 25 is then loweredbelow the inside face of the ring 10, so that the latter can be pressedagainst the shoulder 12 on the boltcarrier Il. lVhcn the ring hasreached the head or shoulder 12 of the carrier, it serves to press theworking end of the spring 2G into one of the notches of thebolt-operating cylinder C to lock the latter and consequently the boltB, the release of the bolt being effected by forcing the spring-tumblerout of the notch by a key-bit.

Having described my invention, I claim- 1. The combination with abicycle-frame embodying a steering-head and a tube thereon, of a carrierhaving screw-receiving openings; a series of screws passing through saidopenings and in threaded engagement with the steering-head tube, a casing fitting around the carrier outside of the screw receiving openings tolaterally guard the screws, a bolt passing through a bore of the carrierand adapted to be projected into an openin g in the steering-head, andmeans serving to prevent access to the heads of the carrier-holdingscrews.

2. The combination, with a bicycle-frame embodying a steering-head and atube thereon, of a carrier having screw-receiving openings; a series ofscrews passing through said openings and in threaded engagement with thesteering-head tube; a casing fitting around the carrier outside of thescrew-receiving openings to laterally guard the screws; a bolt passingthrough a bore in the carrier and adapted to be projected into anopening in the steering-head, said bolt having a cap or guard at itsouter end constructed to prevent access to the heads of thecarrier-holding screws.

3. The combination, with a bicycle-frame IOO IIO

embodyinga steering-head and a tube thereon, of a carrier havingscrew-receiving opengngsg a series of screws passing through said VIOopenings and in threaded engagement With the steering-head tube; acasing fitting around the carrier outside of the screw-receiving 'openings to laterally guard the screws; a bolt passing through a bore in thecarrier and adaptedto be projected into anopening in the steering-head,said bolt having a disk at its louter end, which serves to preventaccess to the heads of the carrier-holding screws.

4. The combination with a bicycle-frame embodying a steering-head'andatube thereon, of a substantially cylindrical carrierhaving'screw-receivingopenings and diametrically oppositescrew-receiving 'channels oommeans serving to prevent access to thecarrier-holding screws, and a bolt-operating cylinder adapted to bepassed through a slot in the casing.

EDWARD E. TRYON.

Witnesses: FRED. J. DOLE,v

HEATH SUTHERLAND.

